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WiFiClientEvents.ino
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/*
* This sketch shows the WiFi event usage
*
*/
/*
* WiFi Events
0 SYSTEM_EVENT_WIFI_READY < ESP32 WiFi ready
1 SYSTEM_EVENT_SCAN_DONE < ESP32 finish scanning AP
2 SYSTEM_EVENT_STA_START < ESP32 station start
3 SYSTEM_EVENT_STA_STOP < ESP32 station stop
4 SYSTEM_EVENT_STA_CONNECTED < ESP32 station connected to AP
5 SYSTEM_EVENT_STA_DISCONNECTED < ESP32 station disconnected from AP
6 SYSTEM_EVENT_STA_AUTHMODE_CHANGE < the auth mode of AP connected by ESP32 station changed
7 SYSTEM_EVENT_STA_GOT_IP < ESP32 station got IP from connected AP
8 SYSTEM_EVENT_STA_LOST_IP < ESP32 station lost IP and the IP is reset to 0
9 SYSTEM_EVENT_STA_WPS_ER_SUCCESS < ESP32 station wps succeeds in enrollee mode
10 SYSTEM_EVENT_STA_WPS_ER_FAILED < ESP32 station wps fails in enrollee mode
11 SYSTEM_EVENT_STA_WPS_ER_TIMEOUT < ESP32 station wps timeout in enrollee mode
12 SYSTEM_EVENT_STA_WPS_ER_PIN < ESP32 station wps pin code in enrollee mode
13 SYSTEM_EVENT_AP_START < ESP32 soft-AP start
14 SYSTEM_EVENT_AP_STOP < ESP32 soft-AP stop
15 SYSTEM_EVENT_AP_STACONNECTED < a station connected to ESP32 soft-AP
16 SYSTEM_EVENT_AP_STADISCONNECTED < a station disconnected from ESP32 soft-AP
17 SYSTEM_EVENT_AP_STAIPASSIGNED < ESP32 soft-AP assign an IP to a connected station
18 SYSTEM_EVENT_AP_PROBEREQRECVED < Receive probe request packet in soft-AP interface
19 SYSTEM_EVENT_GOT_IP6 < ESP32 station or ap or ethernet interface v6IP addr is preferred
20 SYSTEM_EVENT_ETH_START < ESP32 ethernet start
21 SYSTEM_EVENT_ETH_STOP < ESP32 ethernet stop
22 SYSTEM_EVENT_ETH_CONNECTED < ESP32 ethernet phy link up
23 SYSTEM_EVENT_ETH_DISCONNECTED < ESP32 ethernet phy link down
24 SYSTEM_EVENT_ETH_GOT_IP < ESP32 ethernet got IP from connected AP
25 SYSTEM_EVENT_MAX
*/
#include <WiFi.h>
const char* ssid = "your-ssid";
const char* password = "your-password";
void WiFiEvent(WiFiEvent_t event)
{
Serial.printf("[WiFi-event] event: %d\n", event);
switch (event) {
case SYSTEM_EVENT_WIFI_READY:
Serial.println("WiFi interface ready");
break;
case SYSTEM_EVENT_SCAN_DONE:
Serial.println("Completed scan for access points");
break;
case SYSTEM_EVENT_STA_START:
Serial.println("WiFi client started");
break;
case SYSTEM_EVENT_STA_STOP:
Serial.println("WiFi clients stopped");
break;
case SYSTEM_EVENT_STA_CONNECTED:
Serial.println("Connected to access point");
break;
case SYSTEM_EVENT_STA_DISCONNECTED:
Serial.println("Disconnected from WiFi access point");
break;
case SYSTEM_EVENT_STA_AUTHMODE_CHANGE:
Serial.println("Authentication mode of access point has changed");
break;
case SYSTEM_EVENT_STA_GOT_IP:
Serial.print("Obtained IP address: ");
Serial.println(WiFi.localIP());
break;
case SYSTEM_EVENT_STA_LOST_IP:
Serial.println("Lost IP address and IP address is reset to 0");
break;
case SYSTEM_EVENT_STA_WPS_ER_SUCCESS:
Serial.println("WiFi Protected Setup (WPS): succeeded in enrollee mode");
break;
case SYSTEM_EVENT_STA_WPS_ER_FAILED:
Serial.println("WiFi Protected Setup (WPS): failed in enrollee mode");
break;
case SYSTEM_EVENT_STA_WPS_ER_TIMEOUT:
Serial.println("WiFi Protected Setup (WPS): timeout in enrollee mode");
break;
case SYSTEM_EVENT_STA_WPS_ER_PIN:
Serial.println("WiFi Protected Setup (WPS): pin code in enrollee mode");
break;
case SYSTEM_EVENT_AP_START:
Serial.println("WiFi access point started");
break;
case SYSTEM_EVENT_AP_STOP:
Serial.println("WiFi access point stopped");
break;
case SYSTEM_EVENT_AP_STACONNECTED:
Serial.println("Client connected");
break;
case SYSTEM_EVENT_AP_STADISCONNECTED:
Serial.println("Client disconnected");
break;
case SYSTEM_EVENT_AP_STAIPASSIGNED:
Serial.println("Assigned IP address to client");
break;
case SYSTEM_EVENT_AP_PROBEREQRECVED:
Serial.println("Received probe request");
break;
case SYSTEM_EVENT_GOT_IP6:
Serial.println("IPv6 is preferred");
break;
case SYSTEM_EVENT_ETH_START:
Serial.println("Ethernet started");
break;
case SYSTEM_EVENT_ETH_STOP:
Serial.println("Ethernet stopped");
break;
case SYSTEM_EVENT_ETH_CONNECTED:
Serial.println("Ethernet connected");
break;
case SYSTEM_EVENT_ETH_DISCONNECTED:
Serial.println("Ethernet disconnected");
break;
case SYSTEM_EVENT_ETH_GOT_IP:
Serial.println("Obtained IP address");
break;
default: break;
}}
void WiFiGotIP(WiFiEvent_t event, WiFiEventInfo_t info)
{
Serial.println("WiFi connected");
Serial.println("IP address: ");
Serial.println(IPAddress(info.got_ip.ip_info.ip.addr));
}
void setup()
{
Serial.begin(115200);
// delete old config
WiFi.disconnect(true);
delay(1000);
// Examples of different ways to register wifi events
WiFi.onEvent(WiFiEvent);
WiFi.onEvent(WiFiGotIP, WiFiEvent_t::SYSTEM_EVENT_STA_GOT_IP);
WiFiEventId_t eventID = WiFi.onEvent([](WiFiEvent_t event, WiFiEventInfo_t info){
Serial.print("WiFi lost connection. Reason: ");
Serial.println(info.disconnected.reason);
}, WiFiEvent_t::SYSTEM_EVENT_STA_DISCONNECTED);
// Remove WiFi event
Serial.print("WiFi Event ID: ");
Serial.println(eventID);
// WiFi.removeEvent(eventID);
WiFi.begin(ssid, password);
Serial.println();
Serial.println();
Serial.println("Wait for WiFi... ");
}
void loop()
{
delay(1000);
}